I started writing because I wanted to write scripts, but I wasn't very good at it. Then I started writing short stories, sort of as treatments for the film scripts, and I found I enjoyed writing short stories far more than I enjoyed writing film scripts. Then the short stories got longer and longer and suddenly, I had novels.
In the creative industries, there are few things more exciting than a zinger - a thought, idea, line, plot device - anything really, that just totally works in a fundamentally new and fresh way. It's like a uniquely lovely melody or a new taste idea in cooking. Something special, something new, something wonderful. They're also very rare.